Smith Publications

9 Publications

Compost Trials in Newly Planted Orchards

Smith, T. 1995-1997. This WSU Chelan-Douglas County Extension website summary features results from in-orchard compost trials in North Central Washington. Report includes an overview of compost materials and use in orchards.

Influence of orchard floor management and compost application timing on N partitioning in organically managed apple trees

TerAvest, D., J.L. Smith, L. Carpenter-Boggs, L. Hoagland, D. Granatstein, and J.P. Reganold. 2010. HortScience. 45:637-642.

Carbon sequestration under irrigated switchgrass (Panicum virgatum) production

Collins, H.P., Smith, J.L., Fransen, S.C., Alva, A., Kruger, C.E., & Granatstein, D.M. (2010). Soil Science Society of America Journal. 74(6), 2049-2058.

Yield, Protein and Nitrogen Use Efficiency of Spring Wheat: Evaluating Field-Scale Performance

Chapter 17 in Climate Friendly Farming: Improving the Carbon Footprint of Agriculture in the Pacific Northwest. Full report available at

Orchard floor management effects on nitrogen fertility and soil biological activity in newly established organic apple orchard.

L. Hoagland, L. Carpenter-Boggs, D. Granatstein, M. Mazzola, J. Smith, F. Peryea, and J. Reganold. 2008. Biology and Fertility of Soils online.

Storing Winter Vegetables – Winter 2008

Article in Sustaining the Pacific Northwest Newsletter

Brassica juncea seed meal as a fumigant in organic greenhouse production

Poster presentation – BIOAg Research Symposium 2008.

25x’25 is the Path to a Secure and Clean Energy Future – Summer 2007

Article in Sustaining the Pacific Northwest Newsletter

Organic Control of Cherry Fruit Fly

The active ingredient spinosad, a microbial insecticide, was tested for efficacy against cherry fruit fly. Several formulations were tested. The GF-120 product, a combination of spinosyn and a feeding attractant, proved very effective. A new system of control using point sources versus complete canopy cover was developed. The use of GF-120, an organically approved material, for cherry fruit fly control has become widespread among cherry producers in the region, both conventional and organic. It is very effective, non-toxic to humans, low impact to beneficials, and low cost due to the low volume used and quick application.